Once the flood overtopping accident of a reinforced tailings dam occurs, it will cause great property losses and serious environmental pollution to the downstream residents. In order to further study the microscopic characteristics of the hydraulic erosion of reinforced tailings dams, considering that the beginning of reinforced tailings particles is the basis of flooding and erosion of reinforced tailings dams, in this paper, a reinforced tailings hydraulic erosion facility was used to carry out the tailings particle start-up test with reinforcement spacing of 5.0, 2.5, 1.7, 1.3, and 1.0 cm, and the influence the law of critical incipient velocity of tailings particles with different reinforcement spacing was revealed. The test results show that, the smaller the reinforcement spacing, the larger the incipient velocity of the reinforced tailings sample. Based on the sediment incipient motion theory, it is assumed that the resistance direction of particle incipient motion is opposite to the particle motion direction. A reinforcement coefficient is introduced to establish the incipient velocity formula of reinforced tailings particles. This model can provide theoretical support for the study of the hydraulic erosion rate of a reinforced tailings dam.

中文翻译：

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加筋尾矿水力初始运动模型研究

加筋尾矿坝一旦发生漫溢事故，将给下游居民造成巨大的财产损失和严重的环境污染。为进一步研究加筋尾矿坝水力侵蚀的微观特征，考虑到加筋尾矿颗粒的始端是加筋尾矿坝淹水侵蚀的基础，本文采用加筋尾矿坝水力侵蚀设施分别进行了5.0、2.5、1.7、1.3、1.0 cm加筋间距的尾矿颗粒启动试验，揭示了不同加筋间距尾矿颗粒临界初始速度的影响规律。试验结果表明，钢筋间距越小，增强尾矿样品的初始速度越大。根据泥沙初始运动理论，假设粒子初始运动的阻力方向与粒子运动方向相反。引入补强系数，建立了补强尾矿颗粒的初始速度公式。该模型可为加筋尾矿坝水力侵蚀速率的研究提供理论支持。